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Secular Sea-Level Change

  • S. M. Nakiboglu
  • K. Lambeck
Chapter
Part of the NATO ASI Series book series (ASIC, volume 334)

Abstract

Sea-level change as recorded by tide gauges exhibits a complex spatial and temporal variability for a number of reasons, including tectonic movements of changes in ocean volume and the adjustment of the crust to major Late Pleistocene deglaciation, and to recent mountain glacier melting. Tide gaude records have been analysed by least squares regression for secular trends and mean regional trends have been estimated for 10° × 10° areas. These have been expanded into a surface spherical harmonic series, yielding the global long wavelength pattern of sea-level change. The low degree terms in this expansion represent a combination of tectonic change and local or regional changes in sea-level. The eustatic rise, reflecting a change in water volume and corresponding to the zero degree harmonic, is estimated as 1.15 ± 0.38 mm/year. The first degree terms in the expansion are negligibly small, indicating that there is no significant shift in the centre of mass of the ocean relative to the solid Earth. Of the second degree terms only the zonal coefficient is significant with an equatorial sea-level rise and a polar sea-level drop. The contributions from recent changes in mountain glacier volumes and postglacial rebound to the spatial variability are significant but not for the very low degree terms. The separation of these contributions from the observed change yields a globally averaged secular steric change of about 0.5 mm/year but the uncertainties are large. The mainly zonal geometry of the steric change implies greater thermal expansion effects in low latitudes than in high latitudes.

Keywords

Tide Gauge Mountain Glacier Tide Gauge Record Area Means Tide Gauge Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Adamson, D.A., and Pickard J. (1986) ‘Cainozoic history of the Vestfold Hills’, in J. Pickard (ed.), Antarctic Oasis, Academic Press, Sydney, pp. 63–69.Google Scholar
  2. Barnett, T.P. (1983) Recent changes in sea level and their possible causes, Climate Change, 5, 15–38.CrossRefGoogle Scholar
  3. Barnett, T.P. (1984) The estimation of global sea level change: A problem of uniqueness, J. Geophys. Res., 89, 7980–7988.CrossRefGoogle Scholar
  4. Church, J.A., J.S. Godfrey, Jackett, D.R. and McDougall, T.J. (1990) A model of sea-level rise caused by ocean thermal expansions, J. Climate, (in press).Google Scholar
  5. Emery, K.O. (1980) Relative sea levels from tide-gauge records, Proc. Natl. Acad. Sci. USA, 77, 6968–6972.CrossRefGoogle Scholar
  6. Fairbndge, R.W. (1961) Eustatic changes in sea level, in Physics and Chemistry of the Earth, Pergamon Press, 4, 99–185.Google Scholar
  7. Fairbndge, R.W. and Krebs, A.O. Jrn. (1962) Sea level and the southern oscillation, Geophys. J.R. astr. Soc., 6, 532–545.CrossRefGoogle Scholar
  8. Farrell, W.E., and Clark, J.E. (1976) On post-glacial sea-level, Geophys. J.R. astr. Soc., 46, 647–667.Google Scholar
  9. Gornitz, V., Lebedeff, L. and Hansen, J. (1982) Global sea level trend in the past century, Science, 215, 1611–1614.CrossRefGoogle Scholar
  10. Hansen, J., Johnson, D., Lacias, A., Lebedeff, S., Lee, P., Rind, D. and Russell, G. (1981) Climate impact of increasing atmospheric carbondioxide, Science, 213, 957–966.CrossRefGoogle Scholar
  11. Jeffreys, H., The determination of the earth’s gravitational field (second paper), Mon. Nat. R. astr. Soc. Geophys. Suppl., 5, 55–66, 1943.CrossRefGoogle Scholar
  12. Jones, P.D., Wigley, T.M.L. and Wright, P.B. (1986) Global temperature variations between 1861 and 1984, Nature, 3422, 430–434.CrossRefGoogle Scholar
  13. Kaula, W.M. (1959) Statistical and harmonic analysis of gravity, J. Geophys. Res., 64, 2401–2421.CrossRefGoogle Scholar
  14. Kendall, M. and Stuart, A. (1979) The Advanced Theory of Statistics, MacMillan, New York, Vol. 2, pp. 748.Google Scholar
  15. Lambeck, K. (1980) The Earth’s Variable Rotation: Geophysical Causes and Consequences, Cambridge University Press, pp. 449.CrossRefGoogle Scholar
  16. Lambeck, K. (1988) Geophysical Geodesy: The Slow Deformations of the Earth, Oxford University Press, pp. 718.Google Scholar
  17. Lambeck, K. and Nakada, M. (1990). Late Pleistocene and Holocene Sea-Level Change along the Australian Coast, Global Planet Change (in press).Google Scholar
  18. Lambeck, K. and Nakiboglu, S.M. (1984) Recent global changes in sea level, Geophys. Res. Lett., 11, 959–961.CrossRefGoogle Scholar
  19. Lambeck, K. Johnston, P and Nakada M. (1990) Glacial rebound and sea-level change in northwestern Europe, Geophys. J. Int. (in press).Google Scholar
  20. Lizitzin, E. (1974) Sea Level Changes, Elsevier, Amsterdam, pp. 286.Google Scholar
  21. Lliboutry, L. (1965) Traite de Glaciologie, Masson, Paris.Google Scholar
  22. Meier, M.F. (1984) Contribution of small glaciers to global sea level, Science, 226, 1418–1421.CrossRefGoogle Scholar
  23. Meier, M.F., Aubrey, D.G., Bentley, C.R., Broecker, W.S., Hansen, J.E., Peltier, W.R. and Somerville, R.C.J. (1985) Glaciers, ice sheets and sea level: Effect of CO2-induced climatic change, Tech. Rept. NTIS PR-360, pp. 330, US Dept of Commence, Springfield, VA.Google Scholar
  24. Nakada, M. and Lambeck, K. (1987) Glacial rebound and relative sealevel variations: A new appraisal. Geophys. J. R. astr. Soc., 90, 171–224.CrossRefGoogle Scholar
  25. Nakada, M. and Lambeck, K. (1988) The melting history of the Late Pleistocene Antarctic ice sheet, Nature, 333, 36–40.CrossRefGoogle Scholar
  26. Orheim, O. (1985) in Meier et al., The melting history of the Late Pleistocene Antarctic ice sheet, Nature, 333, 210–215.Google Scholar
  27. Peltier, W.R. and Andrews, J.T. (1976) Glacial isostatic adjustment - I: The forward problem, Geophys. J.R. astr. Soc., 46, 605–646.CrossRefGoogle Scholar
  28. Peltier, W.R. and Tushingham, A.M. (1989) Global sea level rise and the Greenhous Effect: might they be connected Sciencee, 244, 806–810.Google Scholar
  29. Shabtaie, S. and Bentley, C.R. (1987) West Antarctic ice streams into the Ross ice shelf: Configuration and mass balance, J. Geophys. Res., 92, 1311–1336.CrossRefGoogle Scholar
  30. Stuiver, M., Denton, G.J., Hughes, T.J. and Fastook, J.L. (1981) ‘History of the marine ice sheet in west Antarctica during the last glaciation: a working hypothesis’, in Denton, G.H. and Hughes, T.J. (eds.), The Last Great Ice Sheets, Wiley, New York.Google Scholar
  31. van der Veen, C.J. (1988)’Projecting future sealevel’, Surveys in Geophysics, 9, 389–418.CrossRefGoogle Scholar
  32. Wigley, T.M.L. and Raper, S.C.B. (1987) Thermal expasnsion of sea water associated with global warming. Nature, 330, 127–131.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1991

Authors and Affiliations

  • S. M. Nakiboglu
    • 1
  • K. Lambeck
    • 2
  1. 1.Civil Engineering DepartmentKing Saud UniversityRiyadhSaudi Arabia
  2. 2.Research School of Earth SciencesAustralian National UniversityCanberraAustralia

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